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Chemistry - Solutions

Practise 31 AIIMS previous year questions on Solutions, compiled from papers spanning 2001 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

Solutions has been asked in 16 of the 19 years of AIIMS papers analysed (2001–2019), with 31 questions in all. 48% of them were easy, 29% moderate and 23% tough. Most of its questions came from 2018, with 4 questions that year. In the last three years (2017–2019) it had 8 questions across 5 papers, about 1.6 per paper.

The chapter's 3 topics are not weighted equally: Colligative Properties and Abnormal Molecular Masses (18 questions, 58%), Vapour pressure and raoult's law (11 questions, 35%), and Henry's law (2 questions, 6%) have been asked the most. Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (6).

  1. 1Assertion: Vapour pressure of solvent increases when a more volatile solvent is added. Reason : is more volatile therefore vapour pressure o26 May, 2019Vapour pressure and raoult's law
  2. 2The vapour pressure of pure and are 200 and 41.5 atm respectively. The weight of and are and respectively in a solution. The vapour pressure25 May, 2019Vapour pressure and raoult's law
  3. 3of polymer having molar mass is dissolved in water. Calculate the osmotic pressure in pascal at .27 May, 2018Colligative Properties and Abnormal Molecular Masses
  4. 4Ethylene glycol is used as antifreeze to reduce freezing point of water to . What mass of antifreeze is required for water? water27 May, 2018Colligative Properties and Abnormal Molecular Masses
  5. 5Assertion : The vapour pressure of a liquid decreases if some non volatile solute is dissolved in it. Reason : The relative lowering of vapo27 May, 2018Colligative Properties and Abnormal Molecular Masses
  6. 6When of solute is dissolved in water, freezing point gets lowered by , calculate molar mass of solute.26 May, 2018Colligative Properties and Abnormal Molecular Masses
  7. 7The depression in freezing point of aqueous solutions of and are in the ratio2017Colligative Properties and Abnormal Molecular Masses
  8. 8Assertion : Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the compone2017Vapour pressure and raoult's law
  9. 9Two elements and form compounds of formula and . When dissolved in of benzene of lowers f. pt. by whereas of lowers . pt. by . The for benze2016Colligative Properties and Abnormal Molecular Masses
  10. 10The freezing point of a solution containing of acetic acid in benzene is lowered by . The degree of association of acetic acid in benzene is2016Colligative Properties and Abnormal Molecular Masses
  11. 11Assertion : Acetone and aniline shows negative deviations. Reason : H-bonding between acetone and aniline is stronger than that between acet2016Vapour pressure and raoult's law
  12. 12The relationship between osmotic pressure at when glucose urea and sucrose are dissolved in of water is2015Colligative Properties and Abnormal Molecular Masses
  13. 13The value of Henry's constant is2014Henry's law
  14. 14Assertion: An ideal solution obeys Raoult's law. Reason: In an ideal solution, solute-solute as well as solvent-solvent interactions are sim2014Vapour pressure and raoult's law
  15. 15Which of the following is true for an ideal solution?2013Vapour pressure and raoult's law
  16. 16Boiling point of benzene is . When of non-volatile solute is dissolved in of benzene. Then boiling point is raised to . Given (benzene) . Th2013Colligative Properties and Abnormal Molecular Masses
  17. 17Assertion : The solubility of a gas in a liquid increases with increase of pressure. Reason : The solubility of a gas in a liquid is directl2012Henry's law
  18. 18Assertion : A non volatile solute is mixed in a solution then elevation in boiling point and depression in freezing point both are . Reason 2011Colligative Properties and Abnormal Molecular Masses
  19. 19For a dilute solution, Raoult's law states that2009Vapour pressure and raoult's law
  20. 20A 0.1 molal solution of an acid is ionized. Calculate freezing point. (molecular weight of the acid is 300 .2009Colligative Properties and Abnormal Molecular Masses
  21. 21A mixture of two miscible liquids and is distilled under equilibrium conditions at pressure. The mole fraction of in solution and vapour pha2009Vapour pressure and raoult's law
  22. 22\(1 {~mol}\) each of the following compounds is dissolved in \(1 {~L}\) of solution. Which will have the largest \( T_b\) value?2007Colligative Properties and Abnormal Molecular Masses
  23. 23The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non-volatile, nonelectrolyte solid weighing \(0.5 {~g}\) is add2007Vapour pressure and raoult's law
  24. 24A solution (by mass) of cane sugar in water has freezing point of and freezing point of pure water is . The freezing point of a solution (by2006Colligative Properties and Abnormal Molecular Masses
  25. 25Assertion : If red blood cells were removed from the body and placed in pure water, pressure inside the cells increases. Reason : The concen2006Colligative Properties and Abnormal Molecular Masses
  26. 26Assertion : The water pouch of instant cold pack for treating athletic injuries breaks when squeezed and dissolves lowering the temperature.2006Colligative Properties and Abnormal Molecular Masses
  27. 27Assertion : The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be diffe2005Colligative Properties and Abnormal Molecular Masses
  28. 28The average osmotic pressure of human blood is 7.8 bar at . What is the concentration of an aqueous solution that could be used in the blood2004Colligative Properties and Abnormal Molecular Masses
  29. 29Which one of the statements given below concerning properties of solutions, describes a colligative effect?2003Vapour pressure and raoult's law
  30. 30Assertion : Increasing pressure on pure water decreases its freezing point. Reason : Density of water is minimum at .2003Colligative Properties and Abnormal Molecular Masses
  31. 31Vapour pressure of benzene at is . When of a non-volatile solute is dissolved in of benzene, its vapour pressure is decreased to . The molec2001Vapour pressure and raoult's law

Frequently Asked Questions

1.How many questions are available for Solutions?

This chapter includes 31 questions compiled from AIIMS papers spanning 2001 to 2019.

2.Are these questions only from AIIMS, or from other exams too?

These are AIIMS questions specifically for the Solutions chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

3.Is Solutions an important chapter for AIIMS Chemistry?

Solutions has appeared in 16 of the 19 years of AIIMS papers covered here, with 31 questions across 18 papers - about 2 per paper it appears in.

4.What is the difficulty level of Solutions questions in AIIMS?

Of the 31 questions analysed for this chapter, 48% are easy, 29% moderate and 23% tough. 2018 had the most, with 4 questions.

5.Which topics in Solutions should I focus on?

These topics have carried the most weightage in Solutions:

  • Colligative Properties and Abnormal Molecular Masses - 18 questions (58%)
  • Vapour pressure and raoult's law - 11 questions (35%)
  • Henry's law - 2 questions (6%)
  • Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (6).
6.Is Solutions's weightage in AIIMS going up or down?

Across all 18 papers analysed, Solutions has averaged about 1.7 questions per paper. In the last three years (2017–2019), that average has stayed about the same, at about 1.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.